Results 21 to 30 of about 1,160,520 (249)

Methods for quantitative studies of seafloor hydrothermal systems using 3D visual reconstructions

open access: yesROBOMECH Journal, 2017
3D visual mapping of the seafloor has found applications ranging from environment monitoring and survey of marine minerals to underwater archaeology and inspection of modern artificial structures.
Adrian Bodenmann   +3 more
doaj   +1 more source

AN OPEN-SOURCE, DATA-LOGGING DEVICE FOR MARINE-BASED SURVEYS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Observation, monitoring, and understanding of the marine environment, particularly seafloor mapping, have gained global attention. Underwater photogrammetry is a valuable technique for creating accurate seafloor orthomosaics and digital elevation models (
A. Mufti   +4 more
doaj   +1 more source

Real-Time Seafloor Segmentation and Mapping [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Posidonia oceanica meadows are a species of seagrass highly dependent on rocks for their survival and conservation. In recent years, there has been a concerning global decline in this species, emphasizing the critical need for efficient monitoring and ...
M. Grimaldi   +8 more
doaj   +1 more source

A Bathymetry- and Reflectivity-Based Approach for Seafloor Segmentation

open access: yesGeosciences, 2018
A robust and flexible technique to segment seafloor acoustic mapping data by analyzing co-located bathymetric digital elevation models and acoustic backscatter mosaics is presented.
Giuseppe Masetti   +2 more
doaj   +1 more source

Subtidal Natural Hard Substrate Quantitative Habitat Mapping: Interlinking Underwater Acoustics and Optical Imagery with Machine Learning

open access: yesRemote Sensing, 2021
Subtidal natural hard substrates (SNHS) promote occupancy by rich benthic communities that provide irreplaceable and fundamental ecosystem functions, representing a global priority target for nature conservation and recognised in most European ...
Giacomo Montereale Gavazzi   +5 more
doaj   +1 more source

Seabed Mapping: A Brief History from Meaningful Words

open access: yesGeosciences, 2020
Over the last few centuries, mapping the ocean seabed has been a major challenge for marine geoscientists. Knowledge of seabed bathymetry and morphology has significantly impacted our understanding of our planet dynamics.
Pedro Smith Menandro   +1 more
doaj   +1 more source

Multispectral Multibeam Echo Sounder Backscatter as a Tool for Improved Seafloor Characterization

open access: yesGeosciences, 2019
The establishment of multibeam echosounders (MBES), as a mainstream tool in ocean mapping, has facilitated integrative approaches towards nautical charting, benthic habitat mapping, and seafloor geotechnical surveys. The combined acoustic response of the
Craig J. Brown   +3 more
doaj   +1 more source

Sources and Impacts of Bottom Slope Uncertainty on Estimation of Seafloor Backscatter from Swath Sonars

open access: yesGeosciences, 2019
Seafloor backscatter data from multibeam echosounders are now widely used in seafloor characterization studies. Accurate and repeatable measurements are essential for advancing the success of these techniques.
Mashkoor Malik
doaj   +1 more source

Seafloor Habitat Mapping by Combining Multiple Features From Optic and Acoustic Data: A Case Study From Ganquan Island, South China Sea

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Seafloor habitat mapping plays an important role in marine environment monitoring and marine geological research. Optic and acoustic remote sensing are becoming common survey tools in seafloor habitat mapping.
Jiaxin Wan   +4 more
doaj   +1 more source

Novel Approaches to Seafloor Mapping in the Northwest Atlantic

open access: yes, 2023
Although oceans cover nearly three-quarters of the earth, studies estimate that only a fraction of the seafloor has been mapped at a resolution higher than 1km2.
Troup, Meghan
core  

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